Buy OSRS Amulet of bounty
The Amulet of bounty is a members-only amulet in Old School RuneScape. It helps you save seeds when farming. When you wear it and plant seeds in an allotment patch, there is a 25% chance to use one seed instead of three. Each time the effect works, the amulet uses one charge.
The amulet starts with 10 charges. When all charges are gone, it crumbles to dust. Charges are tracked per player, not per amulet. You can right-click and break the amulet to destroy it. Then the next one you equip will have all 10 charges again.
This amulet is a good pick for players training Farming. Seeds can cost a lot, so saving them adds up over time. The amulet has no combat stats. It is tradeable, noteable, and very light at 0.007 kg.
You can also make one yourself. Cast Lvl-1 Enchant on an opal amulet using one cosmic rune and one water rune. You need level 7 Magic, and the spell gives 17.5 Magic experience. The cast takes one game tick, which is 0.6 seconds.